weber



2 Sheets--Sheet 1.

(No M d l. 4. WEBER.

MUSIG DESK, 650. No 423,844. Patented Mar, 18, 1390.

' INVENTOR: WlTNESSESf g .7( C9JWfl 4 By his Attorneys,

N. PEYERS. Phumumogn hu, Wmhinginn. D. c

2 Sheets-Sheet 2.

(No Model'.)

A. WEBER.- MUSIC DESK, 850. No. 423,844. Patented Mar; 18, 1890'.

TNVENTOR:

WITNESSES: (fie/M, Warm "&L m4v By hi5 Attorneys,

WQAW N. PETERS, PhuloLhhugnphnr, Waihingwn, D. C.

UNITED STATES PATENT OFFICE.

ALBERT IVEBER, OF LE LOCLE, SIVITZERLAND.

MUSIC-DESK, C.

SPECIFICATION forming part of Letters Patent No. 423,844, dated March18, 1890. Application filed June 14, 1889. Serial No. 314,216. (Nomodel.) Patented in Switzerland April 8, 1889, No. 831.

To to whom it may concern:

Be it known that I, ALBERT IVEBER, a citizen of the Swiss Republic,residing at Le Locle, Switzerland, have invented certain new and usefulImprovements in Music-Desks, &c., (patented in Switzerland by Patent No.831, dated April 8,1889,) of which the following is a specification.

This invention relates to desks, stands, easels, or analogousstructures, and its object is to provide a structure of this characterwhich is collapsible and can be adjusted either in height, width, orinclination. To this end I construct the stand or desk of bars pivotedtogether in the manner of a lazy-tongs, and so arranged that whencollapsed the entire structure will fold into the form of a compactbundle and when extended the desk can be clamped in any position.

In the accompanying drawings, Figure 1 is a front elevation of amusic-stand embodying my invention, the stand being shown in theextended condition. Fig. 2 is aside elevation thereof. Fig. 3 is ahorizontal sectionthereof cut on the line a; a: in Fig. 2. Fig. 4 is afragmentary elevation thereof on a large scale. Fig. 5 is a fragmentaryside elevation thereof on a larger scale than Fig. 2. Fig. 6 is a frontelevation thereof, showing the stand as partly collapsed. Fig. 7 isafront elevation thereof,

showing the supporting-frame of the stand collapsed and the upper partor desk extended, and Fig. 8 is a front elevation show-- ing the entirestand collapsed and folded up into a compact bundle.

Referring to all the drawings, let'A designate the front leg, B the rearleg, and C the desk proper, of a 1nusic-stand.

The legs A and B are formed of bars pivoted together in the manner of alazy-tongs. Each bar of the two lazy-tongs A and B is pivoted in itscenter at Ct to a cross-bar, and at its ends by rivets b b to the endsof the next series of cross-bars in the lazy-tongs. The upper bars ofeach lazy-tongs A and B are pivoted together and to the lower ends ofthe top bars 0 c at d d by rivets b b. The

top bars 0 c are pivoted by rivets d d to the top plate L, to the upperedge of which is hinged the desk 0. The lower bars of the lazy-tongs Aare connected by rivets h 71. to an angle-iron base-plate D, which isprovided with two feet f f. I11 the vertical wall of the base-plate Dtwo horizontal grooves g g are cut, and in these the rivets h h slide.The lower bars of the lazy-tongs B are pivoted at jj, near their ends,to two horizontal bars E E, crossing each other and pivoted together attheir center by a rivet i, (see Fig. 3,) and pivoted at their other endsto the ends of two short bars F F, which latter are pivoted at theirother ends to the under side of the base-plate D by rivets 7t 75-. Thebase-plate D is cut away at Z Z in order to make it as light aspossible. The foot of the supporting-frame is thus constituted by thefeet ffon the base-plate D in front and by the lower ends m m of thebottom bars of the lazy-tongs B at the rear. This foot rests on theground, a floor, or a table, as desired. By this arrangement of thelower part of the supporting-frame the lazy-tongs A and B, as they areextended or collapsed simultaneously, operate the lazytongs formed bythe horizontal brace-bars E E and F F, so that the bottom brace formedby these last named bars is always automatically adapted to the degreeof extension of the lazy-tongs A and B by the movement of the latter.

The desk proper is constructed of the supporting-plate M, which ishinged by the hinge G to the top plate L of the supporting-frame, andwhich supports the lazy-tongs O, which constitutes the table of thedesk.

The bars constituting the lazy-tongs O are pivoted together as describedwith reference to the lazy-tongs A and B, and the lower bars N N areconnected by the pivot m to the supportingplate M. The plate M isconstructed with two grooved slots 0 0 near its ends, which receiverivets n or carried by the bars N N. long to permit the collapse of thelazy-tongs C, and they also serve as stops to limit the extensionthereof. To the lower ends of the bars N N are pivoted two short bars 0O, which are pivoted at their other ends by rivets p p to the plate P,which constitutes the bottom plate of the lazy-tongs G. On this plate Pis hinged a restplate Q, which, when the desk is extended stands in aposition perpendicular to the plane of the lazy-tongs C, and serves toretain the music or other article on the desk, and when the desk iscollapsed These slots 0 0 are sufiiciently is folded against the plateP. Screw-eyes R R are fastened to the ends of the restplate Q, and intothese are screwed the lightholders S S, as best seen in Fig. 1-.

To the outer ends of the upper bars of the lazy-tongs (l are pivotedlateral extensionbars T T, which can be turned out laterally from thelazy-tongs when it is desired to support an unusually large sheet ofmusic, and on the ends of these bars T T are riveted small springs 0'2', which serve to retain the sheets of music and to preventtheirdisplacement by the action of the wind.

Bars V and Y are pivoted at their outer ends to the upper bars 0 c ofthe supportingbase, and extend thence over the plate Ii. These barscross each other over the plate L and are provided with slots 1' y intheir inner ends. The screw-bolt U is fixed to the plate L and projectsforward therefrom and through the grooves r 3 in the bars V Y. A bar Zis hinged to the plate )1 forward of the hinge G and extends thencedownwardly in front of the plate L and across the bars V and Y. This barZ is provided with a slotin its lower end which engages the serew boltU. A thumbscrew X engages the end of the bolt U, and when the screw istightened it serves to clamp the bars V, Y, and Z tightly against theplate L, and thereby to make the polygon formed by the bars Y c, L c,and V, indicated by the numbers 1, f3, 3, i, and 5, rigid. This clampingmechanism serves to clamp the lazy-tongs of the supporting-base in anydesired position, and also serves to clamp the desk proper at thedesired inclination. In order to adjust the position of the lazy-tongsconstituting the supportingbase, the thumlyscrew X is loosened, and thelazy-tongs can then be extended or collapsed, as desired, and then upontightening the thumb-screw X the bars V Y will be clamped fast to theplate L, and eonsequently will prevent any movement of the bars 0 c, andthereby will prevent any movement of the lazytongs A and B.

In adjusting the inclination of the desk the thumb-screw X will beloosened, and then the desk can be tilted to the desired extent, whichwill cause the bar Z, hinged. thereto, to move over the face of theplate L. \Vhen the desk has been moved to the desired inclination, thethumb-screw X will be tightened, and will clamp the bar Z to the plate Land thereby prevent the displacement of the desk. This clamping deviceis best seen in Figs. l and 5.

The supporting-base can be extended or col lapsed, as desired,independently of the desk proper. In Figs. 1. and 2 it is shown asextended sul'iiciently for use by a person who is standing, and in Fig.6 is adapted for use by a person who is seated. It may be completelycollapsed, as shown in Fig. 7, which position will be most convenientwhen the structure is to be set on a table and the desk proper is onlyrequired. The desk proper can be extended or collapsed, or inclined toany position independently of the sup iiorting-base.

When the structure is to be packed away for transportation. or storage,the supportingbase is entirely collapsed, as also the desk proper, andthe rest-plate Q is folded back against the plate P and the structure isfolded into a compact bundle, shown in Fig. 8.

I prefer to construct my invention of iron or steel, but it will be seenthat it maybe constructed of any other suitable material, and that itmay be variously formed or ornamented without departing from theessential features thereof.

I claim as my invention the following defined novel features andimprovements in or applicable to desks, stands, easels, or analo' gousstructures, substantially as hereinbefore set forth, namely:

1. A supporting-frame consisting of the combination of two supports A B,each being a lazy-tongs, said supports being joined to gether at theirupper ends and diverging from their juncture and spread apart at theirlower ends when the frame is in position for use.

2. A supporting-frame consisting of two supports A B, each being alazy-tongs, said supports being joined together at their upper ends anddiverging and spread apart at their lower ends, in combination with acollapsible brace, connecting together the lower portions of saidlazy-tongs and constructed of bars pivoted together after the manner ofa lazytongs.

3. The supporting-frame composed of atop plate L, lazy-tongs supportspivotally connected with said top plate and a desk piv0tally connectedwith said top plate, in combination with slotted bars pivotallyconnected to said lazy-tongs supports, and a clampingscrew carried bysaid top plate and extending through the slots in said slotted bars.

4. The supporting-frame composed of a top plate I, and lazy tongssupports pivotally connected therewith and a desk hinged to said topplate, in combination with a slotted brace-link hinged to said desk, anda clampscrew carried by said top plat-e and extending through the slotin saidbrace-link,whereby the inclination of said desk may be adjusted.

5. The combination, with a supportingframe constructed of bars pivotedtogether in the manner of a lazy-tongs, of a desk hinged to said f 'ame,a plate L, to which are pivoted the upper bars of said frame, a plate M,hinged to the plate L and serving to support the desk, and slotted barsV Y Z, and ascrewclamp, as U X, for clamping said bars and the plate Iitogether, whereby the desk may be fixed in any position and thesupporting frame stiffened by tightening said screwclamp.

6. The combination of the supportingframe, consisting of the lazy-tongsA and 1:3, the base-bar ]),to which the ends of the lower terminal barsof the lazy-tongs A are connected by means of sliding pivotalconnections, and the interposed brace-frame E F,

consisting of lazy-tongs bars pivoted at one as stops to limit theopening of the lazy-tongs, end to the bars of the lazy-tongs B and conaplate P, connected to the lower side of the nected at the other end tosaid base-bar D, lazy-tongs, and a rest-plate Q, pivoted to the I 5whereby the folding or unfolding of the plate P. c

5 frames A and B effect-s automatically a cor- In witness whereof I havehereunto signed responding movement ofthe barsfE F. my name in thepresence of two subscribing 7. The combination of the desk 0,constructwitnesses.

ed of bars pivoted together in the manner of a lazy-tongs with asupporting-plate M, to ALBERT VVEBER' IO which said lazy-tongs ispivoted, said plate \Vitnesses:

being formed with slots 0 0, pins n n in the GOTTFRIED WVEIOK,

lazy-tongs engaging these slots and serving 0. J EANNERET CAMILLE.

